PDF malware analysis — malicious · 4ead21133e52d067

MALICIOUS

PDF

47.0 KB Created: 2020-09-09 06:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4722ba18e080ab0a6ee34b13555f5293 SHA-1: a5a1fdddd6a74753480b1b539a13889b89474424 SHA-256: 4ead21133e52d06776a2466c58b6ae07cf8d9fb8125c1356a40c73264038dccf

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a domain associated with a link farm. One prominent link, 'https://ttraff.link/wix?keyword=best+sheet+masks+for+dry+skin', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous PDF links and a malicious redirector indicates a phishing or redirection attempt.

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.link/wix?keyword=best+sheet+masks+for+dry+skin
- https://static.usrfiles.com/ugd/22739b_11391e34de3c41d3b3180c4dcd69f637.pdf
- https://static.usrfiles.com/ugd/2ca22b_1bae8527d53248db99094648f0f7b9a9.pdf
- https://static.usrfiles.com/ugd/882da0_f34bef68508f46ebaec33d3f77f5efc2.pdf
- https://static.usrfiles.com/ugd/b8c837_6058219135d1484896c822688aac2bcc.pdf
- https://static.usrfiles.com/ugd/fe0276_f4e48e9160aa439585c216073ad84323.pdf
- https://static.usrfiles.com/ugd/3826db_a2c781f8615348098b6610919c318ead.pdf
- https://static.usrfiles.com/ugd/cacfd7_84f47c387dff42f186ce2f2b82c22384.pdf
- https://static.usrfiles.com/ugd/7d21c0_898b5295f427427a9479890a6c7e598c.pdf
- https://static.usrfiles.com/ugd/2f8cea_bfa9f646b8bf4aa49d72785f6e5cf351.pdf
- https://static.usrfiles.com/ugd/7c30af_26f137a0fbd044f1aab24c4878809f28.pdf
- https://static.usrfiles.com/ugd/b8c837_9a1b85329e56487085f77b286c4c3d0d.pdf
- https://static.usrfiles.com/ugd/4117a9_81682602c3ec4a13b848c8ab108b45cf.pdf
- https://static.usrfiles.com/ugd/067ecb_9ed0377180224e4a99299218e35e037a.pdf
- https://static.usrfiles.com/ugd/5c8b2f_d9ea696104b240f2bcf3b1530a9c9b38.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007a7d.bin` `80e75fa785e293ac5008a20471271e9de4e6637be9c8e708074ed2cd8d4f0688`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A7D	5328 bytes
`font_01_sfnt_off00008c7b.bin` `cb3594a7b297dbc33a21b84c450efc2de29f4bff2bd024ab940694167503e3db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C7B	10156 bytes

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